Time difference of arrival (TDOA)-based geolocation refers to position estimation of a terrestrial emitter by using at least three receivers. This type of geolocation is used by a variety of systems. Existing systems, however, do not provide continuous coverage of a given target area. In this study, satellite constellations that can provide continuous geolocation services in a specific target region are designed and optimized. The problem of TDOA-based geolocation is formulated, and the lower bounds of the estimation errors are expressed in the form of the Cramér–Rao lower bound, and the position dilution of precision (PDOP). Geolocation constellations in low Earth orbits are designed using global optimization techniques, aimed at minimizing the PDOP.
Constellation Design for Regional Space-Borne Geolocation
Journal of Guidance, Control, and Dynamics ; 45 , 5 ; 795-814
2022-05-01
Article (Journal)
Electronic Resource
English
Emergency Locator Signal Detection and Geolocation Small Satellite Constellation Feasibility Study
British Library Conference Proceedings | 2011
|The Most Accurate and Stable Space-Borne Thermometers - FORMOSAT-3/COSMIC Constellation
British Library Conference Proceedings | 2007
|Geolocation by Near‐Space Platforms
Wiley | 2014
|Introduction to Space Electronic Reconnaissance Geolocation
Wiley | 2014
|Autonomous Navigation Technology of Regional Constellation
Springer Verlag | 2018
|